$notice           .= '<div class="alignright browser-icon"><a href="' . esc_attr( $response['update_url'] ) . '"><img src="' . esc_attr( $img_src ) . '" alt="" /></a></div>';
			$browser_nag_class = ' has-browser-icon';
		}
		$notice .= "<p class='browser-update-nag{$browser_nag_class}'>{$msg}</p>";

		$browsehappy = 'https://browsehappy.com/';
		$locale      = get_user_locale();
		if ( 'en_US' !== $locale ) {
			$browsehappy = add_query_arg( 'locale', $locale, $browsehappy );
		}

		$notice .= '<p>' . sprintf(
			/* translators: 1: Browser update URL, 2: Browser name, 3: Browse Happy URL. */
			__( '<a href="%1$s" class="update-browser-link">Update %2$s</a> or learn how to <a href="%3$s" class="browse-happy-link">browse happy</a>' ),
			esc_attr( $response['update_url'] ),
			esc_html( $response['name'] ),
			esc_url( $browsehappy )
		) . '</p>';
		$notice .= '<p class="hide-if-no-js"><a href="" class="dismiss" aria-label="' . esc_attr__( 'Dismiss the browser warning panel' ) . '">' . __( 'Dismiss' ) . '</a></p>';
		$notice .= '<div class="clear"></div>';
	}

	/**
	 * Filters the notice output for the 'Browse Happy' nag meta box.
	 *
	 * @since 3.2.0
	 *
	 * @param string $notice   The notice content.
	 * @param array  $response An array containing web browser information. See `wp_check_browser_version()`.
	 */
	echo apply_filters( 'browse-happy-notice', $notice, $response ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
}

/**
 * Adds an additional class to the browser nag if the current version is insecure.
 *
 * @since 3.2.0
 *
 * @param string[] $classes Array of meta box classes.
 * @return string[] Modified array of meta box classes.
 */
function dashboard_browser_nag_class( $classes ) {
	$response = wp_check_browser_version();

	if ( $response && $response['insecure'] ) {
		$classes[] = 'browser-insecure';
	}

	return $classes;
}

/**
 * Checks if the user needs a browser update.
 *
 * @since 3.2.0
 *
 * @return array|false Array of browser data on success, false on failure.
 */
function wp_check_browser_version() {
	if ( empty( $_SERVER['HTTP_USER_AGENT'] ) ) {
		return false;
	}

	$key = md5( $_SERVER['HTTP_USER_AGENT'] );

	$response = get_site_transient( 'browser_' . $key );
	if ( false === $response ) {
		// Include an unmodified $wp_version.
		require ABSPATH . WPINC . '/version.php';

		$url     = 'http://api.wordpress.org/core/browse-happy/1.1/';
		$options = array(
			'body'       => array( 'useragent' => $_SERVER['HTTP_USER_AGENT'] ),
			'user-agent' => 'WordPress/' . $wp_version . '; ' . home_url( '/' ),
		);

		if ( wp_http_supports( array( 'ssl' ) ) ) {
			$url = set_url_scheme( $url, 'https' );
		}

		$response = wp_remote_post( $url, $options );

		if ( is_wp_error( $response ) || 200 != wp_remote_retrieve_response_code( $response ) ) {
			return false;
		}

		/**
		 * Response should be an array with:
		 *  'platform' - string - A user-friendly platform name, if it can be determined
		 *  'name' - string - A user-friendly browser name
		 *  'version' - string - The version of the browser the user is using
		 *  'current_version' - string - The most recent version of the browser
		 *  'upgrade' - boolean - Whether the browser needs an upgrade
		 *  'insecure' - boolean - Whether the browser is deemed insecure
		 *  'update_url' - string - The url to visit to upgrade
		 *  'img_src' - string - An image representing the browser
		 *  'img_src_ssl' - string - An image (over SSL) representing the browser
		 */
		$response = json_decode( wp_remote_retrieve_body( $response ), true );

		if ( ! is_array( $response ) ) {
			return false;
		}

		set_site_transient( 'browser_' . $key, $response, WEEK_IN_SECONDS );
	}

	return $response;
}

/**
 * Displays the PHP update nag.
 *
 * @since 5.1.0
 */
function wp_dashboard_php_nag() {
	$response = wp_check_php_version();

	if ( ! $response ) {
		return;
	}

	if ( isset( $response['is_secure'] ) && ! $response['is_secure'] ) {
		$msg = sprintf(
			/* translators: %s: The server PHP version. */
			__( 'Your site is running an insecure version of PHP (%s), which should be updated.' ),
			PHP_VERSION
		);
	} else {
		$msg = sprintf(
			/* translators: %s: The server PHP version. */